BCP Council (Bournemouth area): Matt is delighted to share the news that planning permission has been granted for a carefully designed roof-level extension at West Mansions, on Poole Road in Westbourne, creating 4 new two-bedroom apartments and delivering a net increase of 3 homes, alongside improved cycle and bin storage.
The proposal, which was designed by ARC Architecture for a mutual client sits in a sensitive townscape location next to the Westbourne Conservation Area and beside a Grade II listed former cinema, so the final design places real emphasis on a respectful fit with its historic neighbours.
West Mansions is a distinctive 1930s block of flats with clear Art Deco, Streamline Moderne character: curved bays, a flat roof and a stepped silhouette. The approved proposal focuses on alterations and extensions at fourth-floor/roof level to form the additional homes, with the officer report noting an evolved design that uses lightweight glazed elevations and controlled detailing to sit comfortably atop the existing building.
In plain terms, this is about making better use of an existing building in an established centre, rather than consuming new land at the edges of town. The site is on Poole Road, within easy reach of Westbourne’s shops, services and public transport connections, which is exactly the kind of location where additional homes can be supported without relying on car travel for every journey.
Just as importantly, the consent acknowledges the context: buildings here range in height and style, with a long history of flats and redevelopment. The approved approach therefore keeps the proposal rooted in the area’s existing pattern of development,
The planning journey: balancing design, neighbours and the environment Although this was a delegated approval, it was not a “rubber stamp”. The application letters of objection, raising concerns including height, overdevelopment, loss of light, privacy, construction disturbance and waste management. At the same time, a wide range of statutory consultees reviewed the scheme, including heritage, urban design, highways, waste, biodiversity and the fire service, but had no objections subject to conditions. A few key themes shaped the application:
1) Heritage and townscape fit. With the site adjacent to the conservation area and next to a listed former cinema, design quality and visual impact were always going to be front-and-centre. The officer report explains that the scheme was revised during the application following early heritage concerns. That change was important in improving the relationship with nearby heritage assets and reducing perceived bulk. Final approval includes conditions requiring samples and detailed drawings for external finishes and joinery, ensuring the extension reads as a considered addition rather than an afterthought.
2) Protecting neighbours’ amenity Roof extensions can raise understandable questions about privacy, outlook and noise. Here, the council accepted that the extension’s position meant it was unlikely to cause harmful overshadowing, but it did identify the need to carefully manage overlooking risks. Two practical measures stand out: Privacy screens are secured by condition to protect nearby residents, particularly to the rear. Partially obscure glazed oriel windows were introduced on elevations facing the neighbouring site at (Tayfield House), which already has permission for a substantial flatted scheme (which Pure Town Planning also secured consent for). This kind of adjustment shows how a proposal can anticipate not just today’s context, but the emerging “as-built” environment as neighbouring sites come forward.
Considering a similar project? If you’re exploring a roof extension, reconfiguration, or additional flats wither within or on top of existing buildings in a constrained town-centre setting and you’d like an early view on planning strategy, risks and opportunities, get in touch with our team to discuss your site and objectives.